Improvement in sash-fastening



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Letters Patent N 103,938, dated une 7, lSl'O.

- IMPROVEMENT :N sAsH-FASTENING.

The Schedule referred to in these Letters Patent and making part ofthesame.

.To all whom it may concern Be it known that we, WILLIAM B. SNYDER andROBERT HUBBARD, both of Bridgeport, iu the county of Fairfield and Stateof Connecticut, have invented a new and use i'ul Improvement inSash-Fastenings,'of which the following'is a specification.

Our invention relates to'that class of sash-fastenings in which ahorizontally-swinging latch, secured to therlower bar of the upper sash,engages with-a segment rim or anged plate on the upper bar ofthe lowersash andi V lhe'improvement herein claimed consists in the combinationof the swinging latch andthe segment- `shaped catch with the peculiarspring, hereinafter de'- scribcd, to hold the latch in its lockedposition. y

In the accompanying drawingu Figure 1 represents a. plan or top view ofour improved fastener; Y Figure 2, a vertical transverse section throughthe same, at the line x x of fig. l; and

Figure 3, a view of thespring catch detached.

In `order to carry out our invention, we secureav box, A, to one sash ofthe window. l

The latch B swings horizontally on a pivot, b, in the box.

The rear ends of the latch are square, and bear against a spring, a', inthe box, to hold vthe latch in any position in which it may be set.These pa-rts of the device are old.

A segment rib or anged catch-plate,.G, of the .usual form, is secured tothe other sash.

A plate-spring, D, extends across the curve of this plate, and issecurely held by being sprung into scelgets in the plate.- l

A rib, c, on the lower side of the spring, plays in a guide, c', in theplate,.\vhich keeps the spring from moving endwise while allowing ittomove laterally.

The spring, however, can be removed by bending it inward until the rib centers the lcng part oi the notch shown iu iig. l, when it can be movedendwise far enough to slipone end 0f the spring out ot' its socket.

A notch, (l, in the upper side ofthe spring, receives a stud orprojection, e, ou the latch b, when locked, and t-husholds it securely,preventing the latch' from being unfastened until the spring is pressedout far enough for the latch to clear the notch.

We have described our improvement as a windowfastening, but it obviouslyis applicablerto extension tables and other analogous uses.

XVe do not broadly claim the combination of anyspring catch withanfastening of this kind. v

XVe claim as our iuventionl The construction and relative arrangementhereinbefore set fort-h, of t-lic horizontally-swinging lat-chr,

'the segment-shaped eatchfplate, and the notched horizontally-movingplate-spring inserted vertically into the catch-plate, for vthe purposedescribed. y

In testimony whereof we vhereunto 'subscribed our names.

' WILLIAM B. SNYDER.

Witnesses zv ROBERT HUBB'ARD.

H. It. LAcEY, F. HURD.

